title: Assessing the rates of ring-opening of aziridinium and azetidinium ions: a dramatic ring size effect.
abstract: Rates for the ring-opening of aziridinium and azetidinium ions by DMAP were measured. The four-membered ring appears to be ca. 17,000 times less reactive compared to the three-membered ring but is still highly relevant from a synthetic viewpoint. The electrophilicity of these strained ammonium ions is measured for the first time.
authors.affiliation: Institut Lavoisier-Versailles, UMR 8180, Université de Versailles St-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: De Rycke
authors.forename: Olivier
authors.initials: O
authors.lastname: David
authors.forename: François
authors.initials: F
authors.lastname: Couty